9679639 has 4 divisors (see below), whose sum is σ = 9693280. Its totient is φ = 9666000.

The previous prime is 9679627. The next prime is 9679661. The reversal of 9679639 is 9369769.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9679639 - 2¹³ = 9671447 is a prime.

It is a super-2 number, since 2×9679639² = 187390822340642, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9679592 and 9679601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9679609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5694 + ... + 7195.

It is an arithmetic number, because the mean of its divisors is an integer number (2423320).

Almost surely, 2^9679639 is an apocalyptic number.

9679639 is a deficient number, since it is larger than the sum of its proper divisors (13641).

9679639 is a wasteful number, since it uses less digits than its factorization.

9679639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13640.

The product of its digits is 551124, while the sum is 49.

The square root of 9679639 is about 3111.2118217826. The cubic root of 9679639 is about 213.1177979925.

The spelling of 9679639 in words is "nine million, six hundred seventy-nine thousand, six hundred thirty-nine".